Folding box



Aug. 30, 1932. D, LEVKQFF 1,874,705

FOLDING BOX Filed oct. 11, ,1929 2 sheets-sheetA 1 25 Inveno'r AttorneyAug. 30, 1932. D. LEvKoFF 1,874,705

FOLDING B OX Filed oct. 11, 1929 2 sneeze-sheet 2 V, A f

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Patented Aug. 30, 1932 UNITED STATES PATENT OFFICE DAVID LEVKOFF, OFBROOKLYN, NEW YORK, ASSIGNOR TO EVELYN G. LEVKOFF, OF

BROOKLYN, NEW YORK FOLDING :BOX

Application led October 11, 1929. Serial No. 398,912.

This invention relates to improvements in folding boxes. v The primaryobject of the invention resides in a folding box constructed from asingle blank of material which is cut and scored in a manner to effect asaving of stock and to speed up the production or output of a machinewithout in any way sacrificing strength to the walls of the box.

Another object of the invention is to provide a folding box in which apair of coacting locking flaps are contiguous with the side or end wallswhich overlap the rear wall to hold the box in a set up position andserve to effectively reinforce the rear wall.

Afurther object is the provision of a foldable cardboard box in whichthe joining corner flaps are coextensive with the side walls and aresecured to the front wall by two stitches, staples or the like fasteningelements, the rear walls having inturned flaps for` rigidly reinforcingthe same.

A still further object is to provide a folding box which liessubstantially flat when in an unfolded position and which may be set upfor instant use without undue effort or patience on the part of a user.

With these and other objects in view, the

invention resides in the certain novel construction, the combination andarrangement of parts, the essential features of which are hereinafterfully described, are particularly pointed out in the appended claims,and are illustrated in the accompanying drawings, in which: j Figure 1is a perspective view showing the box in a set up closed position infull lines, and in a partially set up position in dot and dash lines.

Figure 2 is a perspective view of the box in a partially set upposition.

Figure 3 is a vertical enlarged sectional view on the line 3-3 of Fig.2.

Figure 4 is a sectional perspective view showing the front and sidewalls in a normal flattened condition.

Figure 5 is a plan view of the blank before folding.

Referring more particularly to the drawings, the reference lcharacter Adesignates the blank from which my improved folding box is constructed,and which is cut and scored from a single piece of material in a.

Ymanner as to be saving in stock, and which is capable of speeding upproduction of the output of the machine, as will be hereinafterappreciated.

The blank A may be of cardboard or any like foldable material, andincludes prima- `rily a. bottom wall 10, bounded by end walls 11 and 12,a front Wall 13, and a rear wall 14. The end walls l1 and l2 areprovided with inwardly foldable reinforcing iiaps 15, while the frontwall 13 is provided with a like reinforcing flap 16. Coextensive withthe rear endsof the end walls 11 and 12 are coacting interlocking iiaps17 and 18 respectively, the former being provided at its outer end witha tongue 18 which is insertible into an elongated slit 20 provided inthe flap 18 adjacent its connection with the end wall 12.

Coextensive with the front end of the end walls 11 and 12 are frontcorner flaps 21, which are identical in construction and provided withdiagonal fold lines 22 which permit folding of the box in a manner shownin Figure 4 of the drawings, and which will be more fully understoodhereinafter.

Hinged to the rear wall 14 is a swingably mounted cover 23 provided witha front cover flap 24 which abuts the front wall of the box when thesaid box is in a set up position and the cover is closed thereon asshown in Figures 1 and 3 of the drawings.

With reference to Figure 4 of the drawings, it will be seen that thefront corner flaps 21 fold on the diagonal fold lines 22 to permit thefree outer ends of the flaps to be ixedly connected to the front iap 16by stitches or staples 25, the said front iiaps being folded inwardlyover the front wall 13 with the corner flaps 21 interposed therebetween.

Assuming that the blank is in the position shown in Figure 4 of thedrawings wherein the side walls 11 and 12 are foldable over the bottomwall 10 at which time the interlocking flaps 17 and 18 overlie the coversection as will be appreciated at which time the box is in asubstantially flat condition. When it'is desired to set up the box foruse, it is only necessary for a slight pressure to be applied to thefront wall to cause the same to moveto a vertical position which willautomatically cause the side walls to stand upright together with theinterlocking flaps 17 and 18. The rear wall 14 is next erected whereuponthe flaps 17 and 18 are brou ht around exteriorly of the rear wall so tat the locking tongue 19 enters the slit-20 in the tongue 18. This tendsto pull the box togetherv and retain the walls of the body of the box ina set up position.

The reinforcing flaps 15 are next turnedl inwardly over the side wallsto reinforce the same in a manner clearlyshown in Figure 2 of thedrawings. Assuming that the box body is in a set up position asjustdescribed, it is only necessary to swing the cover 23 over the body tocause the front locking flap 24 to it against the front wall which willtend to retain the vcover in such position.

From the foregoingl description, it will be seen that I have provided afolding box which isf' extremely simple of construction, and which whenin a setup position provides a rigid construction to permit packing offragile articles without fear of damage thereto intransit. Withreference to Figure 5, it willl be noted that the blank A issubstantially rectangular in plan and only fragments of a rectangle havebeen cut away to produce the various folding parts of the box.

While I have shown and described what I deem to be the most desirableembodiment x of my invention, it will be understood that I do not wishto limit myself to the exact details of construction shown, nor toanything less than the whole of my invention, limited only by theappended claiins:

Having thus described the invention, what I claim as new and desire tosecure by Letters Patent is 1. A folding box comprising a body having abottom wall, a front wall, a rear wall, side walls, foldable cornerflaps coextensive with one end of said side walls and xedly secured tosaid front walls, and coacting interlocking flaps coextensive with theother end of said side walls and foldable about the rear walls to holdsaid body in a set up condition.

2. A folding box comprising a body having a bottom. wall, a front Wall,a rear wall, side walls, foldable corner flaps coextensive with one endof said side walls and lixedly secured to said front walls, coactinginterlocking flaps coextensive with the other end of said side walls andfoldable about the rear walls to hold said body in a set up condition,and reinforcing flaps coextensive with said side walls and front walland foldable inwardly thereof to reinforce the respective walls.

3. A folding box comprising a body having a bottom wall, a front wall, arear wall, side walls, foldable corner flaps coextensive withI one endof said side walls and xedly secured to said front walls, coacting`interlocking laps coextensive with the other end of said Side walls andfoldable about the rear walls to hold said body in a set up condition, acover swingingly connected to said rear wall, and a front cover iap onvone edge of said cover for fitting withln the front wall upon closin ofsaidcover to said body. .J

4. folding box comprising a single blank of cardboard cut and scored toprovide a bottom wal1,connected front and rear walls by the bottomthereof, connecting side walls, corner flaps coextensive with one end ofsaid side walls folding against said front wall for iixed connectiontherewith, and coacting ineoy terlocking iaps coextensive with the otherend of said side walls folding exteriorly of and against said rear wall.

In testimony whereof I aix my signature.

` DAVID 'LEVKOFE lac

